CVE-2026-6478 Affecting postgresql:16/pgvector package, versions <0:0.6.2-2.module_el9.6.0+167+4e561146


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.56% (43rd percentile)

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  • Snyk IDSNYK-ALMALINUX9-POSTGRESQL-17807106
  • published3 Jul 2026
  • disclosed22 Jun 2026

Introduced: 22 Jun 2026

CVE-2026-6478  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:9 postgresql:16/pgvector to version 0:0.6.2-2.module_el9.6.0+167+4e561146 or higher.
This issue was patched in ALSA-2026:26203.

NVD Description

Note: Versions mentioned in the description apply only to the upstream postgresql:16/pgvector package and not the postgresql:16/pgvector package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 relevant fixed versions and status.

Covert timing channel in comparison of MD5-hashed password in PostgreSQL authentication allows an attacker to recover user credentials sufficient to authenticate. This does not affect scram-sha-256 passwords, the default in all supported releases. However, current databases may have MD5-hashed passwords originating in upgrades from PostgreSQL 13 or earlier. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.

References

CVSS Base Scores

version 3.1